Docker: Remove all images and containers

Problem:

You use Docker, but working with it created lots of images and containers. You want to remove all of them to save disk space.

Solution:

Warning: This will destroy all your images and containers. It will not be possible to restore them!

Run those commands in a shell:

# Delete all containers
$ sudo docker rm $(docker ps -a -q)
# Delete all images
$ sudo docker rmi $(docker images -q)

This solution has be proposed by GitHub user @crosbymichael in this issue